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<html lang="en">

<head>
    <meta charset="UTF-8">
    <meta http-equiv="X-UA-Compatible" content="IE=edge">
    <meta name="viewport" content="width=device-width, initial-scale=1.0">
    <title>Document</title>
</head>

<body>
    <script>
        // 递归 函数自调用
        function run(num) {
            if (num == 0) return 0;
            return run(num - 1) + num;
        }
        console.log(run(5));

        // function a(){
        //     console.log("===");
        //     b()
        //     console.log("aaaa");
        // }
        // function b(){
        //     console.log("bbbb");
        // }

        // a()
        var data1 = [{
            title: "biaot",
            arr: ["a", "b", "c"],
            obj: {
                name: "aaa",
                arr1: ["aaa", "bbb", "ccc"]
            }
        }, {
            title: "标题2",
            arr: ["2a", "3b", "4c"],
            obj: {
                name: "222aaa",
                arr1: ["2aaa", "2bbb", "2ccc"]
            }
        }, {
            title: "标题2",
            arr: ["2a", "3b", "4c"],
            obj: {
                name: "222aaa",
                arr1: ["2aaa", "2bbb", "2ccc"]
            }
        }, {
            title: "标题23",
            arr: ["3a", "3b", "3c"],
            obj: {
                name: "333aaa",
                arr1: ["3aaa", "3bbb", "3ccc"]
            }
        }]
        var obj = {
            name: "333aaa",
            arr1: ["3aaa", "3bbb", "3ccc"]
        }
        // 递归的深拷贝
        function clone(data) {
            if (typeof data != "object") return data;

            var yinyong = data instanceof Array ? [] : {};
            for (var key in data) {
                // data[key] //如果是基本数据类型,直接赋值 如果不是,需要再次循环
                yinyong[key] = clone(data[key]);
            }
            return yinyong;
        }
        var aaa = clone(obj);
        console.log(aaa);

        // aaa[2].obj.name = "lili";
        // console.log(aaa);

        // console.log(data1);
    </script>
</body>

</html>